Hydrocarbon conversion-regeneration process using dilute and dense beds
This patent describes an improvement in a hydrocarbon conversion process wherein a hydrocarbon feed is converted to lower boiling products in a reactor by contacting the same at elevated temperatures with fluid solid material to form the lower boiling products wherein spent solid material containing coke from the reactor is separated from reaction products and stripped of volatile hydrocarbons in a stripping zone, stripped material is regenerated with an oxygen-containing gas in a regeneration zone and hot freshly regenerated fluid solid material returned to the reactor. The improvement comprises carrying out both conversion and regeneration at gas velocities greater than 3 1/2 ft. per second sufficient to achieve a dilute phase entrained solids zone, passing the solid material and gases from both the reactor and regeneration zone through cyclone preseparators for rapid disengagement and removal of greater than 80% solids from gases and returning the solid material without vapors to a dense bed contained in a vessel other than the regenerator or reactor. The pressure at the inlet to the preseparators being substantially the same as the pressure in the vessel containing the dense bed of solid material.
- Assignee:
- Engelhard Corp., Edison, NJ
- Patent Number(s):
- US 4851108
- Application Number:
- PPN: US 6804871A
- OSTI ID:
- 5322827
- Resource Relation:
- Patent File Date: 5 Dec 1985
- Country of Publication:
- United States
- Language:
- English
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